sci-hub doesn't get new research papers any more, and the new alternatives are all much less user friendly. As far as I can tell, wosonhj.com is what's currently recommended, where you have to post in a forum and wait for either a bot or a human to send the paper to you. Other alternatives, like annas-archive, nexusbot or STC all didn't have the paper I was looking for.
I just want old sci-hub back, honestly.